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Invalid update to pc in instruction
- From: Girish Shilamkar <girish at linsyssoft dot com>
- To: gdb at sources dot redhat dot com
- Date: Tue, 28 Mar 2006 14:55:53 +0530
- Subject: Invalid update to pc in instruction
Hi,
While running kgdb kernel I got following error:
(gdb) p/x $pc
$4 = 0xc00ef530
(gdb) n
0xc00ef530 in memcpy () at uaccess.h:363
363 in uaccess.h
Invalid update to pc in instruction
(gdb) disas $pc
Dump of assembler code for function memcpy:
0xc00ef520 <memcpy+0>: stmdb sp!, {r0, r4, lr}
0xc00ef524 <memcpy+4>: subs r2, r2, #4 ; 0x4
0xc00ef528 <memcpy+8>: blt 0xc00ef5dc <memcpy+188>
0xc00ef52c <memcpy+12>: ands r12, r0, #3 ; 0x3
0xc00ef530 <memcpy+16>: pld [r1]
0xc00ef534 <memcpy+20>: bne 0xc00ef5fc <memcpy+220>
0xc00ef538 <memcpy+24>: ands r12, r1, #3 ; 0x3
0xc00ef53c <memcpy+28>: bne 0xc00ef62c <memcpy+268>
I am using cross gdb-6.4 for Intel PXA270 (armv5l) processor.
Kindly let me know in what scenario does the error msg "Invalid update
to pc in instruction" is displayed ?
Thanks & Regards,
-Girish.